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Asked: 2026-06-11T20:33:45+00:00

My code is written in Delphi 7, but I don’t think it plays a

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My code is written in Delphi 7, but I don’t think it plays a particular role.

I try to overwrite the content of a file with WriteFile.
It works perfectly except when writing a “.dll” file and antivirus is active.

  • Opening the handle to the file is still OK.
  • writing is blocked : WriteFile function does not RETURN !!!

The antivirus seems to prevent from overwriting in that dll.
But, the worst is that I have to reboot the PC because my app is blocked, task manager is blocked, Windows Explorer is blocked, etc.

How can I prevent this ?

Any ideas ?

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1 Answer

  1. Editorial Team

    If you add digital signiture to the your executable, there is a less chance triggering the anti-virus. A lots delphi programs are mis-targeted by anti-virus software, D7 is worst.

    Not sure what you are trying to write to a dll. Anti-virus don’t like extra data outside PE.

    If you just need to update a dll, try rename the old dll, and write a new file, delete the old afterwards.

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